To test the relevance of our microarray analysis in identifying subclasses of adenomas, we measured the expression levels of six differential genes from the microfollicular adenoma subclass (ADAMTS2, CABIN1, ALDH13, USP13, NR2F2 and KRTHB5), on the same 32 follicular thyroid samples mentioned above (Figure 4B). This evidence concerns the gene USP13 and adenoma.